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PAGE Noalue st Cost coos Cos2

Answer»

note that cos90° = 0

Cos 1× cos 2× cos 3× ......× cos179= cos 1× cos 2× cos 3× .....× cos 90× .....× cos 179=cos 1× cos 2× cos 3× .....× 0 × .....× cos 179=0×cos 1× cos 2× cos 3× .......× cos 179=0



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